A diesel engine is simultaneously incredibly simple and incredibly violent, using compression as a means of ignition. This is because of the properties of diesel fuel: Namely, diesel is less volatile ...

The NASA team developing the X-59 supersonic demonstrator jet have fired up the aircraft’s GE Aviation F414-GE-100 powerplant for the first time, having started engine-run tests on 30 October. The ...

Your engine depends on a single rubber belt to keep critical accessories spinning in sync. When that serpentine belt slips, cracks, or breaks, you lose power steering, charging, and cooling in seconds ...

Ever been told your car is running lean? It means the engine is receiving too much air or not enough fuel during combustion. You see, your car's engine needs a very specific balance of air and fuel to ...

When it comes to gas-powered lawn mowers, you can't do things halfway. Maybe you don't need the same amount of strength as a full-on car, but you will need something that can tear through large, ...

This story appears in the June 29 print edition of Transport Topics. Over-the-highway trucks and buses with 2007 engine technology ran nearly 90% cleaner than required by federal emission standards ...